tablet in for repair since 26 feb 2015

hi there<br> we bought a tablet from homemark sept 2014. since then we struggle with it to connect to the internet. took it back to the store 31/03/2015, came back 26/02/2104 not working!!! the consultant on duty told the trainee that was busy unpacking stock to assist me, while busy with her own things. send it back on the same day it came back. since then we are waiting for that tablet to came back. everytime you phone the store they either don't know whats going on or they tell you they are still waiting. so I went there like 3 weeks back to check but the consultant just pull up her shoulders to say that they are still waiting, they will receive it when they receive stock, so 10min later I went back to the store finding a other consultant, she phoned them and give me the phone to talk to who ever was repairing the tablet, the guy told me he was busy on it on that aczact moment, and I will receive it within a week, so its 3 weeks later im still waiting, the consultant once again told me on 07/04/2015 they are still waiting for stock, and there is nothing she can do about it. really!!!! do I realy have to wait for them to receive stock before I can have my tablet. bad and no service